Buenos Ayres would find it difficult to dislodge the Brazilians by force, though there are advocates for this measure. Prudence, I trust, will guide their resolves; and if injustice has been perpetrated, let revenge be deferred until it can be securely taken. The separation, after centuries of fellowship, and falling under foreign dominion, must be galling. If Buenos Ayres held the Banda Oriental, she would be a powerful state, which it is the policy of the court of Rio de Janeiro to prevent. Its fortresses, fine climate and country, improving population, influx of emigrants, under a strong government, would make even the empire of Brazil to look about them. However, such an event is distant; every thing leads me to think its present occupants will long keep possession. APPENDIX. RULES of the PORT of Buenos Ayres; DUES to be paid by Foreign and National Vessels; PENALTIES to which those are subject who violate the Laws of the Police, or who attempt to destroy in any manner the line of Buoys established on the Ortiz and Chico Banks, Mount Santiago, and Point Lara, or those which the Government may hereafter establish on other points of the river for the safety of navigators. RULES OF THE PORT. Article 1. The guard ship, in the inner roads, on observing a vessel anchor in the outer roads, will hoist a red flag at the mizen mast, as a signal to the captain of the vessel which has arrived, to proceed towards the shore in his boat. 2. The said captain, taking with him his papers, will go on board the guard ship. 3. On the arrival of the boat, the commandant of the guard ship will desire her to anchor astern, and will then hoist a yellow flag, for the health boat to come and pass the visit. 4. The commandant of the guard ship must not permit any communication between his crew and those of the boat, until after the health visit. 5. The captain will be interrogated by the health and war visit; and if he does not answer truly, he will be tried by the laws of the country. 6. If the weather will not permit the health-boat to pass the visit, the commandant of the guard-ship will wait till they make signals from the shore. Those signals will generally be, to permit the boat of the vessel which has arrived to disembark on the quay. If, nevertheless, the weather be too boisterous, and the boat cannot come on shore, the commandant of the guard-ship may permit the crew to go on board him, and then the guard-ship herself will be considered in a state of quarantine, and must not communicate with any person, be who they may, until after the health visit has passed. 7. When the health visit has fulfilled her office, the commandant of the guard-ship will strike the red and yellow flags, mentioned in the Articles 1st and 3d. 8. Having permission to communicate with the shore, captains will present themselves at the Captain of the Port's office, where they will fully inform him of the police of the port.